View Compilation Error

0_0_36618484_19917.cpp: In function 'int main()':
0_0_36618484_19917.cpp:73:68: error: request for member 'top' in 'h', which is of non-class type 'int [2005]'
                     ans = max(ans, h[s.top()] * (j - h[(s.pop(), h.top())]));
                                                                    ^